We're doing our best to track the growing list of federal and state-based incentives for purchasing an electric car or plug-in hybrid. See how much you can save to get behind the wheel of an electric-drive plug-in vehicle.

The House GOP tax reform bill released last week proposes to wipe out the federal tax credit for electric-vehicle purchases. The credit is worth up to $7,500 for consumers who buy cars that run on battery power and produce little to no tailpipe emissions. If the bill passes, the credit will apply to electric or plug-in hybrid vehicles purchased through the end of 2017—but not beyond that time.

Southern California Edison, which provides electricity to 14 million people, this week started offering a $450 reward to customers who drive plug-in vehicles. Utilities in California, and other states such as Georgia and Florida, have offered perks and special rates for years—but the new SCE incentive makes second and third owners of a vehicle eligible for the payment.

Building better batteries isn’t the only way that the cost of a plug-in-electric vehicle can be lowered. Finding more uses for the batteries that are already in the vehicles is another way to lower costs. California just released a plan that explores one way to do that.

Norway offers among the most generous packages of rewards for EV ownership in the world, and EVs represent five to six percent of all new vehicle sales in country. That has created somewhat of a backup at charging stations in the city of Oslo, as well as a crowding of the city's bus lanes, which—thanks to one of Norway's numerous EV perks—are open to electric cars.

The Renault Zoe battery pack lease gives Renault the power to remotely turn off the car for lease enforcement. But the ramifications mean governments who are already gathering data from Internet activities might tap into data about us via our cars.